628597155 has 16 divisors (see below), whose sum is σ = 1015522560. Its totient is φ = 331996128.

The previous prime is 628597141. The next prime is 628597163. The reversal of 628597155 is 551795826.

It is a happy number.

It is not a de Polignac number, because 628597155 - 2⁷ = 628597027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201885 + ... + 204974.

It is an arithmetic number, because the mean of its divisors is an integer number (63470160).

Almost surely, 2^628597155 is an apocalyptic number.

628597155 is a deficient number, since it is larger than the sum of its proper divisors (386925405).

628597155 is a wasteful number, since it uses less digits than its factorization.

628597155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406970.

The product of its digits is 756000, while the sum is 48.

The square root of 628597155 is about 25071.8398806310. The cubic root of 628597155 is about 856.6251161209.

The spelling of 628597155 in words is "six hundred twenty-eight million, five hundred ninety-seven thousand, one hundred fifty-five".